Oh, front ds will need to be replaced, and since you have the 3.6, I think exhaust mods are needed. Rear shaft will work, but I would budget for a cv shaft eventually. Also plan on some front axle beef, c gussets, axle tubes, or a truss. TNT and artec both make really sweet trusses, the artec looks a little easier to install though. I also chewed through most all my stock front end parts on my first serious wheeling trip to the black hills, and that was on 35's. I am now running poly performance steering with 1ton GM tie rod ends, poly track bar and sector shaft brace, and poly performance ball joints. All have held up well so far to the 37's.
'09 JK rubicon unlimited- 3.5" clayton hard arm, billstein 5100's, 37" Nitto trail grapplers, Warn powerplant, Spod, OR-Fab tire carrier, Schaffer offroad front bumper, poison spyder evap skid, River Raider full skids, Poly Performance steering, Sleeved/gusseted f&r D44's with 5.38's & chromo shafts